In the first part of the is article, we discussed about the advantages of integrating GIS and BIM in a construction project. In this article, we will explore the current way of working and its drawback. We will also discuss the future of BIM and GIS integration and its impact on construction projects.
Geographic context of a project is a vital factor in the decision-making process of a construction project. Over a period of years, GIS has evolved greatly and provides a first-hand context of the spatial conditions. GIS enhances the value of digital BIM Services as it provides visual context. Integrating 4D BIM with GIS enables the project stakeholders to take informed decisions by foreseeing the impacts of the decisions before, during and after the construction of the project.
Current Approach: Fragmented and Disconnected Approach
The current methodology of working is such that the processes are prone to inefficiencies and more importantly, loss of critical data that leads to increased risks. These factors are the key drivers that demand an integrated approach.
There are 3 major areas in the current approach which call for an improvised methodology:
1. Process of Project Handover
The raw BIM data is handed over to the GIS team. This is then updated manually in order to import it to the GIS database. Any mis-match is not reported back to the BIM team as this is a one-way channel of information flow; which is a drawback of the current process.
2. Inaccessible Data
Manually editing the data renders it inaccessible directly by the BIM software which makes the data outdated. Moreover, the chances of human error in the data input process can result in the loss of vital information.
3. Non-authoritative Systems of Records
Data fetched from a non-authoritative system of records and incorporated in the GIS data during manual addition can result in faulty and outdated design. The project teams need to be more vigilant while utilizing the data.
New Approach: Integrated and Driving Smarter Decisions
Architects, engineers, designers and GIS professionals need to adopt a different approach to deliver more and better with less efforts. Integrating GIS and BIM allows to create workflows where the data flows seamlessly from one system to another. Efforts are currently on to develop such a system.
By using “Data” at the center approach broadens and enhances the understanding of infrastructure in the larger context of built and natural environments – enabling earlier and better-informed decision-making process, improved stakeholder engagement, and accelerated approval processes. This new approach ultimately leads to a better decision-making ability.
Thus, integrating GIS and BIM (specifically BIM Architectural Services) optimizes and improves the performance of elements in a system. Data from this system is input into the ongoing planning of new projects which are more sustainable. This helps in delivering more resilient infrastructure and smarter cities while reducing the costs and accelerating the project timelines.
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